Rotary swivel



May 22, 1934.

Filed Feb. 26, 1930 Patented May 22, 1934 aim. a meme assignments, to Oil-.Wellflupply Company e .wWfiWi Pi- -g uaumsgtm ze. 1e30," nd-43am w s f This invention relates to and .p'artieuend'ertn 'swivei ror connecting a drill pipe, larlytothattypeofswivel knowna'srotaryswlvnot shown. I A

els for use in-ccnnection with rotatJwelladrillim termd be wee t eupper end of the wall 993mm? v V *1 h. spaced from the inner surface of 6 The. prime object of the present'in'vention is to the casing wall, and the under side of the swivel.

stem 10, as well as provide a new and improved rotaryswlvelof the I character specifiedofsimple, strongand durable construction, embodying-simple and efficient means for adjusting the bearings employed in connection with the wel stem and'swivel head means for preventing ttings and, other foreign matter entering the bearings, and eifectivelnieans for supporting the ball of the swivelwhen the swivel is in non-operative/positiom In the accompanying drawing, which .illuss. trates an application of'my invention: z Fig. 1 is a vertical sectional view of a swivel embodying myinvention, one half of the view being taken on a plane at right angles to the other half;

Fig. 2, a cross sectional view taken on the line II1IofFig.1; and 3 Fig. 3, an elevational view.-- Referring to the drawing, 5 designates a hollow body, casing or trimnion' block of theswivel'structure, and 6 trunnicns projecting outwardly therefrom adapted for engagement with a bail, '1, whereby the swivel may be suspended in the usual manner from a traveling or hoisting block, not shown. Formed integral with, or suitably attached to the exteriorof the bQ y, I provide u p r and lower outwardly extending lugs '8 and 8a constituting bail rests designed for supporting, the bail in such angular, positions that it may be. readily attached togthe hook carried by traveling block. The provision of the upper and lower rests positioned as illustrated, relatively; close to the trunnions, provides meansifor tioning the ball so that it mayb e aged 1 with the hook. of the block, either lien-standingfin}. the derrick or in other positions it may be placed; inpractlce. The hollow casing is designed toreceive the. swivel head 9 and a portion of the hollow swivel] the bearings and packingniaterials, and is formed with an annular wall 11 having a flange 12 and an annular-flange 13,-and-- with spaced apart ribs 13a. 14 designates a pro"- jecting extension of follower 15 and packingld, the latter being in terposed between a portion of the swivel-stem and the said extension and held in position by-the' follower. Bolts 1'7 are employed for adiustably securing the follower 15in operative position. A

coupling member 18 is threaded. asat'19, to an is" a cap '24 having opening 25 for cess to the interior enclosed operating parts, said cap being attached Y tothe body by means of bolts'26. Bottom por operate with a operate with an adjusting nut or member 33,

' ofthe swivel head, and

.an annular flange a.

' which is subjected preventing anyoperating parts of the wall 11 designedtoreceive a" 44 head, I' providethemainanti-friction bearing 20.

This bearing 20 includes upper and lower plates 21 and 22,.a'n intermediate plate23, and rollers 23a, supportedby thehollow body. r

' Closing-the upper end of the body'or casing 5 permitting-acmanipulating ofthe cap for tion 27- of the cap has a. depending annular. wall 2B'interiorly' threaded at, 29 to receive and co- 7 v v gland or follower 30, the'latter resting upon a packing. 31.' 30a is a nut lock for the follower. Wall 28, for a portion of its length, is exteriorly threaded at '32-to receive andcoand disposed between member 33, wall28, a flange 34 the upper surface of the head, is a bearing 35.

An important feature of the cap construction is This flange, when the cap is placed on the body, enters the upper end of the body and snugly fits the opening thereof, thuslreinforoing the body and preventing a collapse or injury to the body or casing at this point, to considerable strain due to the weight of the trunnions and the pull exerted by thbail.

= projects beyond gland 30, and it will be noted that any' mud or other foreign matter that may work up between the water tube and packing would 41 and .be discharged away from its cooperating packing, thereby foreign matter working into the swivel. A goose-neck or hose connection 43 is attached to the upper end of the closure cap 24 by meansof threadedbolts strike membergland 30 and din addition to the main bearing 20 and the bearing-35, I provide thrust bearings 45 located between the. swiv l stem and the wall 11 of the casing. 1 Inconnection with the bearings, attention is called to the fact that the construction and assemblage of partsis such that cuttings from upper bearings are prevented from working into lower bearings. The swivel head 9 operates in the upper chamber or space 48 oi the casing, and this chamber is in open communication with lower chamber or space 47 by means of a passage 48. Cuttings from bearings 35 will be thrown oil into the chamber 48 and will pass downwardly through said chamber, out of contact with the main bearings, and into chamber 47 by passages 48; and cuttings from the main bearings will also pass downwardly without coming into contact with bearings 45. 49 designates cleaner plugs closing openings in the lower portion of the casing through which cuttings and other foreign matter may be removed.

Closure cap 24 is provided with an opening closed by a filler plug 50. In addition to the parts just described, portion 27 oi the cap is formed with an opening 52, normally covered by a plate 53, through which a member may be passed to engage a cut-away portion 54 of the adjusting member 33 to turn said member to effect adjustment. Plate 53 carries a locking member a designed to project through the opening 52 and engage a cut-away portion 54 when the adjusting member has been turned to the desired posi ion.

From the foregoing, it will be noted tha the adjusting member 33 may be turned to eilfect the desired adjustment of the bearings without the necessity oi removing the cap from the casing, it being only necessary to remove plate .53v in order to turn member 33 on the threaded portion 32 of the depending annular wall 280! the bottom portion 27 or the cap. 'Aiter adjustment, plate 53 is replaced and secured by bolts 54a. with the locking member a in engagement with a cutaway portion 54. I

Upper bearing 35, as illustrated andas preferred, includes a bearing plate d, a race-way plate e, and rollers I. This bearing is supported by the swivel head, with the raceway e positioned outside or and below the contacting adjusting member 33.

I claim:

1. In a rotary swivel, the combination with a .hollow body, a swivel stem. a swivel head, a cap 1,oso,aas I closure for the body comprising a portion having a centrally disposed depending wall entered in the body, said wall having an exterlorly threaded portion, anti-iriction means between the swivel head and the depending wall, and bearing adjusting means comprising a threaded member mounted on the threaded portion of the depending member.

2. In a rotary swivel. the combination with a hollow body, a swivel stem, a swivel head, a cap closure for the body comprising a bottom portion having a centrally disposed depending wall entered in the body, said wall having an exteriorly threaded portion, anti-friction means between the swivel head and the depending wall, bearing adjusting means comprising a threaded membermounted on the threaded portion of the depending wall, and cooperating locking means on the cap and adjusting member tor locking the hearing adjusting means in adjusted position.

3. In a rotary swivel, the combination with a hollow body, a swivel stem, a swivel head, a cap closure for the body comprising a bottom portion having a centrally disposed depending wall entered in the body, anti-friction means between the swivel head and the depending wall, bearing adjusting means operatively positioned on said wall for eil'ecting an adjustment of the bearing, said bottom portion having an opening to permit access to the adjusting means, and a plate normally covering said opening.

4. ma rotary swivel, the combination with a hollow body, a swivel stem, a swivel head, a cap closure for the body comprising a bottom portion having a centrally disposed depending wall entered in the body, anti-iriction means between the swivel head and the depending wall, bearing adjusting means operatively positioned on said wall for eflecting an adjustment of the bearing, said bottom portion having an opening to permit access to, the adjusting means, a plate normally covering said opening, and a locking member for cooperation withthe adjusting means carried by the plate.

EDGAR E. GREVE.

Ill 

